Christella hispidula var. versicolor(R. P. St. John) comb. ined. (redirected from: Thelypteris macilenta R. P. St. John)
Family: Thelypteridaceae
hairy maiden fern
[Thelypteris hispidula var. versicolor (R. P. St. John) Lellinger, moreThelypteris macilenta R. P. St. John, Thelypteris quadrangularis var. versicolor (R. P. St. John) A. R. Sm., Thelypteris versicolor R. P. St. John]
Stems short-creeping to ascending at apex, 3--5 mm diam. Leaves monomorphic, evergreen, closely placed, (20--)40--95 cm. Petiole straw-colored, (5--)10--40 cm × 1.5--3 mm, at base with brown, lanceolate, hairy scales. Blade 14--55 cm, proximal 0--2(--4) pairs of pinnae slightly to greatly reduced (lowest pinnae to 1/3 length of longest), blade gradually tapered to pinnatifid apex. Pinnae 4--14 × 0.8--2 cm, incised 3/4--4/5 of width; segments spreading or somewhat oblique, rounded at tip, basal acroscopic segment of proximal pinnae sometimes auriculate and crenate; proximal pair of veins from adjacent segments united just below sinus or approaching each other and turning abruptly toward sinus, or connivent at sinus, excurrent vein, if any, 1 mm or less. Indument on both surfaces of densely set hairs 0.2--0.8 mm on costae, veins, and often blade tissue, also often of yellowish, stalked glands 0.1 mm. Sori round, medial to supramedial; indusia hairy; sporangial stalks with inconspicuous stalked, pear-shaped glands. 2 n = 72. Woodlands and limestone sinks, especially in seepage areas and along streams; 0--100 m; Ala., Fla., Ga., La., Miss., S.C., Tex.; West Indies in Cuba.